For those who have not linked to David Cook Official, I'm bringing this over from the billboard thread on that site.
'David Cook' is the best-selling album by a new artist this chart year by a significant margin. (Lady Gaga's 'The Fame' is #2, and she trails Cook by 415K units sold since the Billboard chart year began with their 12/6/08 issue). It was, at last tally, the 7th best-selling album of the chart year overall, and is one of only 8 albums to sell 1 million+ units chart year-to-date.
Times have changed. It has become much harder to sell millions of albums. By today's standards David Cook has done very well.
I have no doubt his stature and popularity will to grow. Every live performance yields new fans. He is one of those rare artists whose live performances are even better than his recorded performances. Try to catch a live concert. You'll be in for a real treat.